1. 1st divide to half take the heavier out 1 m6 E4 G A" ?# W% v* h公仔箱論壇2. 2nd take 4 balls out of 5 divide 2 groups to get the heavier out. (if is equal thn the remain is the one u looking for)tvb now,tvbnow,bttvb: }4 k+ j1 O/ Y% ?1 G! P, w6 K' p
3. Same method if is not equal on 2nd try.